What is the term for the continuous or intermittent injection of gas into the lower section of the production?

What is the term for the continuous or intermittent injection of gas into the lower section of the production?

• A. Water Drive
• B. Gas Lift
• C. Foam Lift
• D. Hydrogenation

Answer: (B)

Gas lift is an artificial lift method where gas is injected into the lower portion of the production string to reduce the hydrostatic pressure of the liquid column, letting reservoir pressure push fluids to the surface. The injected gas creates bubbles that lighten the overall density of the column, so the liquid can rise more easily. The gas can be supplied continuously or intermittently, controlled by downhole or surface valves to match production needs. This approach is especially useful when reservoir pressure is insufficient to push oil to the surface or for wells with changing production rates. It’s different from natural water drive, which relies on reservoir water pressure, and from foam lift or hydrogenation, which are alternate, less common methods not primarily about lifting through gas injection.

Gas lift is an artificial lift method where gas is injected into the lower portion of the production string to reduce the hydrostatic pressure of the liquid column, letting reservoir pressure push fluids to the surface. The injected gas creates bubbles that lighten the overall density of the column, so the liquid can rise more easily. The gas can be supplied continuously or intermittently, controlled by downhole or surface valves to match production needs. This approach is especially useful when reservoir pressure is insufficient to push oil to the surface or for wells with changing production rates. It’s different from natural water drive, which relies on reservoir water pressure, and from foam lift or hydrogenation, which are alternate, less common methods not primarily about lifting through gas injection.